<?php
/**
 * Created by litong on Date: 2018/12/22 0022 上午 11:42
 */
$a=intdiv(10,3);
echo $a;
$b="hello,";
$b=$b."world";
echo "<br/>";
echo $b;
$c="Hello,";
$c.="world";
echo "<br/>";
echo $c;
?>